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From: Christian Brauner <brauner@kernel.org>
To: linux-fsdevel@vger.kernel.org, Jann Horn <jannh@google.com>,
	 Daniel Borkmann <daniel@iogearbox.net>,
	 Kuniyuki Iwashima <kuniyu@amazon.com>
Cc: "Eric Dumazet" <edumazet@google.com>,
	"Oleg Nesterov" <oleg@redhat.com>,
	"David S. Miller" <davem@davemloft.net>,
	"Alexander Viro" <viro@zeniv.linux.org.uk>,
	"Daan De Meyer" <daan.j.demeyer@gmail.com>,
	"David Rheinsberg" <david@readahead.eu>,
	"Jakub Kicinski" <kuba@kernel.org>, "Jan Kara" <jack@suse.cz>,
	"Lennart Poettering" <lennart@poettering.net>,
	"Luca Boccassi" <bluca@debian.org>, "Mike Yuan" <me@yhndnzj.com>,
	"Paolo Abeni" <pabeni@redhat.com>,
	"Simon Horman" <horms@kernel.org>,
	"Zbigniew Jędrzejewski-Szmek" <zbyszek@in.waw.pl>,
	linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
	linux-security-module@vger.kernel.org,
	"Christian Brauner" <brauner@kernel.org>,
	"Alexander Mikhalitsyn" <alexander@mihalicyn.com>
Subject: [PATCH v6 3/9] coredump: reflow dump helpers a little
Date: Mon, 12 May 2025 10:55:22 +0200	[thread overview]
Message-ID: <20250512-work-coredump-socket-v6-3-c51bc3450727@kernel.org> (raw)
In-Reply-To: <20250512-work-coredump-socket-v6-0-c51bc3450727@kernel.org>

They look rather messy right now.

Signed-off-by: Christian Brauner <brauner@kernel.org>
---
 fs/coredump.c | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/fs/coredump.c b/fs/coredump.c
index 0e97c21b35e3..a70929c3585b 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -867,10 +867,9 @@ static int __dump_emit(struct coredump_params *cprm, const void *addr, int nr)
 	struct file *file = cprm->file;
 	loff_t pos = file->f_pos;
 	ssize_t n;
+
 	if (cprm->written + nr > cprm->limit)
 		return 0;
-
-
 	if (dump_interrupted())
 		return 0;
 	n = __kernel_write(file, addr, nr, &pos);
@@ -887,20 +886,21 @@ static int __dump_skip(struct coredump_params *cprm, size_t nr)
 {
 	static char zeroes[PAGE_SIZE];
 	struct file *file = cprm->file;
+
 	if (file->f_mode & FMODE_LSEEK) {
-		if (dump_interrupted() ||
-		    vfs_llseek(file, nr, SEEK_CUR) < 0)
+		if (dump_interrupted() || vfs_llseek(file, nr, SEEK_CUR) < 0)
 			return 0;
 		cprm->pos += nr;
 		return 1;
-	} else {
-		while (nr > PAGE_SIZE) {
-			if (!__dump_emit(cprm, zeroes, PAGE_SIZE))
-				return 0;
-			nr -= PAGE_SIZE;
-		}
-		return __dump_emit(cprm, zeroes, nr);
 	}
+
+	while (nr > PAGE_SIZE) {
+		if (!__dump_emit(cprm, zeroes, PAGE_SIZE))
+			return 0;
+		nr -= PAGE_SIZE;
+	}
+
+	return __dump_emit(cprm, zeroes, nr);
 }
 
 int dump_emit(struct coredump_params *cprm, const void *addr, int nr)

-- 
2.47.2


  parent reply	other threads:[~2025-05-12  8:55 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-05-12  8:55 [PATCH v6 0/9] coredump: add coredump socket Christian Brauner
2025-05-12  8:55 ` [PATCH v6 1/9] coredump: massage format_corname() Christian Brauner
2025-05-12  8:55 ` [PATCH v6 2/9] coredump: massage do_coredump() Christian Brauner
2025-05-12  8:55 ` Christian Brauner [this message]
2025-05-12  8:55 ` [PATCH v6 4/9] coredump: add coredump socket Christian Brauner
2025-05-12 10:58   ` Luca Boccassi
2025-05-13  0:17     ` Kuniyuki Iwashima
2025-05-13  1:09       ` Luca Boccassi
2025-05-13  2:14         ` Kuniyuki Iwashima
2025-05-13  8:56           ` Lennart Poettering
2025-05-13 12:08             ` Christian Brauner
2025-05-13  0:06   ` Kuniyuki Iwashima
2025-05-12  8:55 ` [PATCH v6 5/9] pidfs, coredump: add PIDFD_INFO_COREDUMP Christian Brauner
2025-05-12  8:55 ` [PATCH v6 6/9] coredump: show supported coredump modes Christian Brauner
2025-05-12  8:55 ` [PATCH v6 7/9] coredump: validate socket name as it is written Christian Brauner
2025-05-12  8:55 ` [PATCH v6 8/9] selftests/pidfd: add PIDFD_INFO_COREDUMP infrastructure Christian Brauner
2025-05-12  8:55 ` [PATCH v6 9/9] selftests/coredump: add tests for AF_UNIX coredumps Christian Brauner

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